[ 14.332048][ T227] ================================================================== [ 14.332333][ T227] BUG: KASAN: global-out-of-bounds in snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 14.332659][ T227] Read of size 8 at addr ffffffff904d4790 by task icmps-accept_ip/227 [ 14.332933][ T227] [ 14.333023][ T227] CPU: 1 UID: 0 PID: 227 Comm: icmps-accept_ip Not tainted 6.17.0-rc3-virtme #1 PREEMPT(full) [ 14.333028][ T227] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011 [ 14.333030][ T227] Call Trace: [ 14.333035][ T227] [ 14.333037][ T227] dump_stack_lvl+0x82/0xc0 [ 14.333043][ T227] print_address_description.constprop.0+0x2c/0x3a0 [ 14.333051][ T227] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 14.333054][ T227] print_report+0xb4/0x270 [ 14.333058][ T227] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 14.333060][ T227] ? kasan_addr_to_slab+0x21/0x70 [ 14.333064][ T227] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 14.333067][ T227] kasan_report+0xca/0x100 [ 14.333071][ T227] ? snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 14.333076][ T227] snmp6_seq_show_item64.constprop.0+0x341/0x500 [ 14.333081][ T227] ? sockstat6_seq_show+0x1d0/0x1d0 [ 14.333092][ T227] ? rcu_is_watching+0x12/0xb0 [ 14.333097][ T227] ? trace_kmalloc+0x26/0xd0 [ 14.333100][ T227] ? __kvmalloc_node_noprof+0x23f/0x570 [ 14.333108][ T227] snmp6_seq_show+0x68/0x190 [ 14.333110][ T227] seq_read_iter+0x3fa/0x1060 [ 14.333120][ T227] seq_read+0x2cc/0x4b0 [ 14.333123][ T227] ? seq_read_iter+0x1060/0x1060 [ 14.333127][ T227] ? __lock_acquire+0x449/0x7e0 [ 14.333137][ T227] ? __mutex_trylock_common+0xf9/0x260 [ 14.333143][ T227] ? rcu_is_watching+0x12/0xb0 [ 14.333151][ T227] proc_reg_read+0x1aa/0x270 [ 14.333162][ T227] vfs_read+0x17e/0xda0 [ 14.333167][ T227] ? fdget_pos+0x230/0x2f0 [ 14.333175][ T227] ? ww_mutex_lock+0x160/0x160 [ 14.333182][ T227] ? kernel_read+0x1f0/0x1f0 [ 14.333187][ T227] ? __lock_release+0x5d/0x170 [ 14.333193][ T227] ? __fget_files+0x199/0x300 [ 14.333199][ T227] ? __fget_files+0x1a3/0x300 [ 14.333209][ T227] ksys_read+0xf7/0x1d0 [ 14.333215][ T227] ? vfs_write+0x12c0/0x12c0 [ 14.333224][ T227] do_syscall_64+0xc1/0x370 [ 14.333230][ T227] entry_SYSCALL_64_after_hwframe+0x4b/0x53 [ 14.333236][ T227] RIP: 0033:0x7f17447412cc [ 14.333242][ T227] Code: ec 28 48 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 29 8b f8 ff 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 48 89 44 24 08 e8 7f 8b f8 ff 48 [ 14.333246][ T227] RSP: 002b:00007ffd76dfa420 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 14.333252][ T227] RAX: ffffffffffffffda RBX: 000000002b5658a0 RCX: 00007f17447412cc [ 14.333255][ T227] RDX: 0000000000000400 RSI: 000000002b565cf0 RDI: 000000000000000c [ 14.333258][ T227] RBP: 00007f17448395c0 R08: 0000000000000000 R09: 0000000000000000 [ 14.333261][ T227] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 14.333263][ T227] R13: 0000000000000d68 R14: 00007f17448389c0 R15: 0000000000000d68 [ 14.333274][ T227] [ 14.333276][ T227] [ 14.343988][ T227] The buggy address belongs to the variable: [ 14.344302][ T227] snmp6_ipstats_list+0x210/0x3e0 [ 14.344502][ T227] [ 14.344589][ T227] The buggy address belongs to the physical page: [ 14.344802][ T227] page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x242d4 [ 14.345128][ T227] flags: 0x80000000002000(reserved|node=0|zone=1) [ 14.345352][ T227] raw: 0080000000002000 ffffea000090b508 ffffea000090b508 0000000000000000 [ 14.345664][ T227] raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000 [ 14.345984][ T227] page dumped because: kasan: bad access detected [ 14.346199][ T227] [ 14.346286][ T227] Memory state around the buggy address: [ 14.346456][ T227] ffffffff904d4680: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 14.346710][ T227] ffffffff904d4700: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 [ 14.346975][ T227] >ffffffff904d4780: 00 00 f9 f9 f9 f9 f9 f9 00 00 00 00 00 01 f9 f9 [ 14.347231][ T227] ^ [ 14.347400][ T227] ffffffff904d4800: f9 f9 f9 f9 00 00 04 f9 f9 f9 f9 f9 00 00 00 01 [ 14.347651][ T227] ffffffff904d4880: f9 f9 f9 f9 04 f9 f9 f9 f9 f9 f9 f9 00 00 06 f9 [ 14.347940][ T227] ================================================================== [ 14.348244][ T227] Disabling lock debugging due to kernel taint [ 14.481438][ T227] icmps-accept_ip (227) used greatest stack depth: 24368 bytes left